Thermal imager



FIG. 1 is a rear perspective view of a thermal imager showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines depict portions of a thermal imager in which the design is embodied and form no part of the claimed design. 

CLAIM We claim the ornamental design for a thermal imager, as shown and described. 